Wädenswil is a typical outer-suburb of Zürich with lots of English Speakers. BUT most of them get around in Zürich downtown for entertainment and social life
Waedenswil even has it's own cinema (albeit with most kids films in German).
It doesn't even feel like an outer-suburb of Zurich. It's a great little town it's own right.
To the OP:
Welcome to Wädenswil (we live in Au which is about a 10-15 min walk from Wädenswil).
There are loads of English speakers (U.S./U.K. and more) here with young children.
We have three boys - the younger two are 5 and 3.5 so feel free to send me a PM if yours needs a play date sometime or you need some info about Waedenswil.
I'm a Nanny and Babysitter living in area. It is a super little town in it's own right!